Needle-threading device for sewing-machines.



A. ANZELEWITZ. NEEDLE THREADING DEVICE FOR SEWING MACHINES.

APPLIOATION FILED mm: as, 1913.

1, 1 07,873, Patented Aug. 18, 1914.

M QHM'BL Witnesses: 2

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\ NEEDLE-THREADING DEVICE FORSEW'ING-MACI'HNES."

Specification of Letters Patent.

Patented An". 18, 1914.

Application filed .Tune 13, 1913. Serial No. 778,459.

1/ b all whom it may concern:

Be it known that I, ABRAHAM .Anznnn wrrz, a citizen of the United Statesof America, residing at 59 Rue St. Vincent, Antwerp, in the Kingdom ofBelgium, have invented certain new and useful Improvements inNeedle'lhreading Devices for Sewing-Machines, of which the following isa specification.

This invention relates to devices for threading the needles of sewingmachines of the kind in which a small hook carried by a movable armsecured to the presser-foot bar of the machine is adapted to be passedthrough the eye of the needle when the latter is stopped at apredetermined height to receive the thread and draw the latter throughthe eye on being-withdrawn.

The main object of the present invention is to provide a device of theabove kind consisting of fewer parts than similar devices and being thuscheaper to manufacture and easier to operate. This object is attainedmainly by so constructing the movable arm carrying the hook that it canbe shifted under the needle bar not only when the latter is in therequired position to make the threader operative but also when ithappens to be a little too low as frequently occurs by reason of thedifficulty of stopping it exactly at a predetermined point of itsstroke.

A further object of the invention is to so construct the socket by meansof which the movable arm is secured to the presser-bar that the saidsocket may be fastened to a presser-foot of square or polygonalcross-sec:

tion as well as to one of circular cross-section. This further object isaccomplished by providing the inner wall of the socket with verticalangular equidistant grooves.

The accompanying drawing shows a preferred form of the device.

Figure 1 is a side view, Fig. 2 a front view, and Fig. 3 a plan view ofthe device whereas Fig. 4: is a perspective view showing the samesecured to the resser-foot bar of a sewing machine with the hook shiftedthrough the needle hole.

In the said figures a is the hook carried by a bent arm 7) provided witha socket c for securing the device to the bar f of a presser foot g. Thehook (I, is fastened in a slot of a small block (Z having two projectingwings 9' adapted to embrace the needle for the purpose of guiding andprotecting thehook.

The said block (Z is secured to the lower end of the arm I) by a screw epassed through a vertical slot in the arm 5 for the purpose of adjustingthe height of the block (Z and j The upper horizontal portion of thehooka. arm Z) is made of two parts n,0, capable of sliding on eachother, oneof which n is made with a slot at through which is passed ascrew Z screwed into the other part 0 in order that the length of theupper horizontal portion of the arm may be adjusted. The front edge ofthe parts a, 0 is beveled or rounded so that, when the arm b is shiftedfor threading the needle, if the needle bar 1' v is somewhat beneath therequired height, the same will be lifted up by the beveled edge of theparts 71-, 0 and will not prevent the arm 6 from passing under theneedle bar for holding the latter in the required position.

Four vertical angular grooves 7) are formed at equal distances from oneanother in the inner wall of the socket c for the purpose of allowingthe latter to be fastened equally well upon square or round presserfootbars.

hat I claim and desire to secure by Letters Patent of the United Statesis 1. A hook-device for threading needles in sewing machines comprisingin combination with. the presser-foot bar and needle bar of the machine,a book, a bent support for said hook rotatably mounted upon said presserrotatably mounted upon said resser-foot bar In testimony whereof I affixmy signature and e bent arm depending from sand socket 1n presence oftwo Witnesses.

and hevin an extensible horizontal ortion W with a bei eled edge adaptedto engage and I ABRAHAM ANZELEXUIIAT 5 raise the needle-bar and avertical portion on Vitnesses: v i

which said block can be adjnstably fixed in ADOLPHE VOGEL,

position. 7 I v CHAS. ROY NASMIDH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C."

